Add global event list destructor

events.c

@@ -72,3 +72,15 @@ event_destroy(EventNode * self)
 	self->next = NULL;
 	free(self);
 }
+
+void event_destroy_all()
+{
+	EventNode *ev;
+	while ((ev = FIRST_EVENT) != &END_EVENTS) {
+		event_destroy(ev);
+		if (ev == FIRST_EVENT) {
+			fprintf(stderr, "Broken doubly linked event list invariant\n");
+			abort();
+		}
+	}
+}

events.h

@@ -47,5 +47,6 @@ extern EventNode END_EVENTS;
 size_t event_replicate(EventNode * source, size_t count);
 EventNode * event_create(const EventData * content);
 void event_destroy(EventNode * self);
+void event_destroy_all();
 
 #endif /* end of include guard: EVENTS_H_ */

main.c

@@ -82,6 +82,7 @@ main(int argc, char ** argv)
 	for (ssize_t i = loaded_config.nodes.length - 1; i >= 0; --i) {
 		graph_node_delete(nodes[i]);
 	}
+	event_destroy_all();
 	free(channels);
 	free(nodes);